Removable type assembly for typewriters



April 4, 1950 v H. A. LUNDGREN REMOVABLE TYPE ASSEMBLY FOR TYPEWRITERS 2 Sheets-Sheet 1 Filed June 8, 1948 mom-2" Ap 4, 1950 v H. A. LUNDGREVN 2,503,162

' REMOVABLE TYPE ASSEMBLY FOR 'rypzwn zms Filed June 8, 1948 I 2 Sheets-Sheet 2 INVENTOR. Half/Y5 ,9; A d/YDGPf/Y Patented Apr. 4, 1 950 REMOVABLE TYPE ASSEMBLYFOR TYPEWBITER-S I Helene A. Lundgren, St. Albans, N. Y.

' Application June 8, 1948, Serial No. 31,753

1 This invention relates .to an interchangeable type arrangement. for typewriters.

1 .It is anobject of the. present invention to provide'an interchangeable .type arrangement for typewriters which can be easily secured in a releasable manner upon the type bars of the typewriter and wherein the type elements can be includedin a casing adapted to be fitted upon the bed'ofthe typewriter in proper location for connection with the typewriter type bars'and wherein this casing can serve for the-storage of the type elementswhen notin use. v

Other objects of the present invention are to providea releasable type element adapted for attachment to swingable type bars, which is of simple construction, easy to install on the bars and adapted to be positively held on the bars against longitudinal displacement thereon, inexpensive to manufacture,- adapted to be collected in a storage casing, and 'efiicient in operation. I J

For other objects and for a better understanding of the invention, reference may be had to the following-detailed description taken in cohnec-. tion, with the accompanying drawin in. which:

Fig.1 is afragrnentary perspective view of a typewriter with a set of type being disposed with their storage casing in place upon the type bed.

Fig. 2 is a longitudinal sectional View of one of the type elements and of a swingable type. bar to which the element is attached.

Fig. 3 is a perspective and exploded view of the type element lifted from the type bar.

Fig.4 is a transverse-sectional view taken on liril-ldf Fig. 2.-

" Fig.5 is-aprspective-view of-thetype case with the cover plate thereon.

Fig. 6 is a perspective view of a modified form of type element adapted for connection to a different type bar.

Fig. 7 is a large perspective view of the type case with the cover removed therefrom.

Fig. 8 is a collective and sectional view with the type element removed from the bar positioned thereover as when the connection of the same with the type bar is to be efiected.

Fig. 9 is a fragmentary top plan view of the storage case and of a plurality of type elements.

Fig. 10 is a transverse sectional view taken on line Ill-l0 of Fig. 7 and looking in elevation upon the latch serving to maintain the type elements in the storage case against lateral displacement therewithin.

Fig. 11 is a fragmentary sectional viewtaken on line IIII of Fig. 9.

I ,5 Claims. (01. 197 36) Referring now to the figures, Ill represents a; typewriter portion to which there is connected a type arm H by a pivot pin l2. This type bar has a depression I3 extending substantially throughout its entire length and which is :en-.

larged at one end as indicated at M. Adjacent. this enlargement l4 and in the upper edge of the arm H is a notch I5. Adapted to be fitted upon the arm is a type element I6 having an enlarge-. ment i8 corresponding to the enlargement I4 of the arm I l to receive the sameand a top dGPIGS'. sion l l forming a projection adapted to fit notch 15. The element 16 is of channel section an has fixed to the top of it type 19. l .These type elements can be aligned and arr; ranged in a case 2! comprising a bottompart 22 and a top cover part 23. The cover parthas; a projection 24 into which can be extendeda; thumb nail for the removal of the cover from the.

. bottom part 22. The cover is retained in place;

by bent over, projections 25 at the ends of the case 22. These bentover projections 25 provide recesses into which the ends of the cover may be, extended. At each end of the bottom part of the end of the; case. The lever 26. has an upwar d-ly extending projection 28 under which a thumb;

nailcan beextended topull the lever out of the;

case toloosen the type elements in order.- that theycan be made free for securement to thetype;

arms for-bars ll. Thepin 21 which retains the; holding lever 2t can-be extended from slot 29in.

order to locate the lever properly within the bottom part of the case. In the front face of the case 22 are spaces 30 out of which extend portions of the type elements. These spaces permit the type elements to be extended over the type bars and the type bars to be extended into the case 22 to receive the elements. The case 22 is rested upon the typewriter bed and by depressing the elements they are forced upon the ends of the bars H. The type elements are made of metal so that they may spring laterally a sufficient amount so that the side depression l8 can be extended over the side of the bar to reach the depression M of the bar. The bars rest on the bed and thus are retained against vertical displacement while this operation is being effected.

In Fig. 6, there is shown the adaptation of a modified type element Hi to a bar H which has ribs I3 extending from the opposite sides of the same and over which the type element I6 is extended. The sides of the type element It have projections 20 adapted to receive the projections 13' of the bar ll. Otherwise, the type element is constructed similarly to the type element IS.

The case 2| serves as a storage device for the various type elements and a case having different type elements can be used -when different type is desired.

After the type elements have been disposed on the bars, the case remains in the typewriter until such time as it is desired to remove the type elements and replace them with another set. While various changes may be made in the detail construction, it shall be understood that such changes shall be within the spirit and "scope of the present invention as defined by the appended claims.

lclaim:

*1. A type arrangement for typewriters com-- prising a case having -a bottom part *with a series of spaces extending *thereacross, "a cover part, means for securing the cover :part to the bottom lpart, and'a set'of type elements disposed in the'bottom part andaccessible through the spaces to 'type bars, whereby upon inserting "the case with the type elements therein into the typewriter and against'thebedthereof the type "elements can *be assembled upon the type bars or the typewriter.

2. A type arrangement for typewriters comprising a case having a-bottom part with aser'ies of 'spaces extending thereacross, a cover part, means for securing the cover part to the bottom part, a set of type elements disposed in the bottom part and accessible through the spaces to type bars, whereby upon inserting the "case with the type elements therein into the typewriter and against the bed thereof 'the type elements can be assembled upon the't'yp'e -bars of 'the typewriter, and te'nsion elei'nents disposed on the opposite ends of the bottom part of the casing and adapted to be pivo'ted into the casing forengagement with the end elements to cause such elements to be pressed tight against one another and retained in the --case.

3. A type arrangement for typewriters comprising a case having a 'bottofn pa'r'twith a' series of "spaces extending 'thereacross, a cover part, meansfor securing *the cover 'partto the botte'm pm, "and aset of type elements disposed in the bottom part and accessible through "the spaces to type 'bars, whereby upon inserting the case with the type elements therein into the typewriter and against the bed thereof the type elements can be assembled upon the type bars of the typewriter, each of said type elements being of channel section having an internal projection extending from the top and adapted to engage with a notch on the type bar whereby to retain said type element against longitudinal displacement "on the bar and a further formation in one "of the side walls of the type element adapted to cooperate with a formation of the type bar whereby to retain the type element on the type bar against vertical displacement therefrom.

4. In combination, a type bar of a typewriter "having a projection extending from one side of the same-and a notch in its top edge near the free end of the bar, a type element of channel section adapted to be fitted over the top edge of the type bar and having a recess in one side of the element to receive theprojection on the end of the bar and an inwardly extending projection adapted to be fitted in the notch of the bar, and type mounted on top -.of the element, the sides .of the type element being adapted spring sufficiently in order 'to fit the :projection of the type bar-into the recess :of the type element and in order that'the type elementimay have a spring fit engagement with the end 0f the type bar.

5. In combination, a type bar having lo'ngltudinal projectionsexte'nding from the opposite sides of the same, a type element of channel section having outwardly depressed liporti'ons adapted to respectively receive the projections on the sides of the bar whereby the type element will be retained on the bar against-vertical displacement therefrom, said type elemen t having a depending projection in its upper edge, said type bar having a notch for receiving' the depending projection of the type element, whereby the type element will be held against long'itudinal displacement upon the end "of the type bar with the depending projection engaging-the notch, and type secured to the type element.

HELENE-AALUNDGREN.

REFERENCES CITED The following references are 6f record in "the 

